/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 10:00:11,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 10:00:11,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 10:00:11,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 10:00:11,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 10:00:11,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 10:00:11,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 10:00:11,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 10:00:11,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 10:00:11,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 10:00:11,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 10:00:11,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 10:00:11,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 10:00:11,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 10:00:11,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 10:00:11,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 10:00:11,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 10:00:11,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 10:00:11,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 10:00:11,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 10:00:11,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 10:00:11,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 10:00:11,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 10:00:11,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 10:00:11,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 10:00:11,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 10:00:11,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 10:00:11,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 10:00:11,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 10:00:11,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 10:00:11,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 10:00:11,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 10:00:11,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 10:00:11,811 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 10:00:11,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 10:00:11,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 10:00:11,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 10:00:11,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 10:00:11,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 10:00:11,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 10:00:11,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 10:00:11,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 10:00:11,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 10:00:11,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 10:00:11,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 10:00:11,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 10:00:11,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 10:00:11,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 10:00:11,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 10:00:11,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 10:00:11,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 10:00:12,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 10:00:12,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 10:00:12,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 10:00:12,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 10:00:12,124 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 10:00:12,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-03-11 10:00:12,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00daa26c1/f049382c459544a881ffccb191d65724/FLAG163b3fceb [2021-03-11 10:00:12,715 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 10:00:12,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-03-11 10:00:12,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00daa26c1/f049382c459544a881ffccb191d65724/FLAG163b3fceb [2021-03-11 10:00:13,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00daa26c1/f049382c459544a881ffccb191d65724 [2021-03-11 10:00:13,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 10:00:13,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 10:00:13,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 10:00:13,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 10:00:13,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 10:00:13,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9f48d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13, skipping insertion in model container [2021-03-11 10:00:13,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 10:00:13,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 10:00:13,214 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 10:00:13,327 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2021-03-11 10:00:13,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 10:00:13,337 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 10:00:13,348 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 10:00:13,364 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2021-03-11 10:00:13,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 10:00:13,419 INFO L208 MainTranslator]: Completed translation [2021-03-11 10:00:13,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13 WrapperNode [2021-03-11 10:00:13,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 10:00:13,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 10:00:13,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 10:00:13,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 10:00:13,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 10:00:13,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 10:00:13,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 10:00:13,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 10:00:13,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... [2021-03-11 10:00:13,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 10:00:13,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 10:00:13,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 10:00:13,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 10:00:13,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 10:00:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 10:00:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 10:00:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 10:00:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 10:00:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 10:00:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 10:00:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 10:00:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 10:00:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 10:00:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 10:00:13,537 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 10:00:13,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 10:00:13,999 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-11 10:00:14,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:00:14 BoogieIcfgContainer [2021-03-11 10:00:14,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 10:00:14,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 10:00:14,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 10:00:14,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 10:00:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:00:13" (1/3) ... [2021-03-11 10:00:14,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6672f043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:00:14, skipping insertion in model container [2021-03-11 10:00:14,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:13" (2/3) ... [2021-03-11 10:00:14,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6672f043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:00:14, skipping insertion in model container [2021-03-11 10:00:14,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:00:14" (3/3) ... [2021-03-11 10:00:14,006 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2021-03-11 10:00:14,011 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 10:00:14,011 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 10:00:14,014 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 10:00:14,015 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 10:00:14,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:14,037 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 10:00:14,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 10:00:14,065 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 10:00:14,066 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 10:00:14,066 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 10:00:14,066 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 10:00:14,066 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 10:00:14,066 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 10:00:14,066 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 10:00:14,066 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 10:00:14,074 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 10:00:14,083 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 101 flow [2021-03-11 10:00:14,085 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 101 flow [2021-03-11 10:00:14,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 101 flow [2021-03-11 10:00:14,107 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-03-11 10:00:14,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 10:00:14,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-03-11 10:00:14,109 INFO L116 LiptonReduction]: Number of co-enabled transitions 300 [2021-03-11 10:00:14,358 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-03-11 10:00:16,145 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-03-11 10:00:16,354 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-03-11 10:00:16,410 INFO L131 LiptonReduction]: Checked pairs total: 488 [2021-03-11 10:00:16,410 INFO L133 LiptonReduction]: Total number of compositions: 44 [2021-03-11 10:00:16,416 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 11 transitions, 27 flow [2021-03-11 10:00:16,422 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-03-11 10:00:16,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:16,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 10:00:16,427 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:16,431 INFO L82 PathProgramCache]: Analyzing trace with hash 239201501, now seen corresponding path program 1 times [2021-03-11 10:00:16,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:16,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839540334] [2021-03-11 10:00:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:16,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:16,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:16,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:16,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 10:00:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:16,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839540334] [2021-03-11 10:00:16,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:16,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 10:00:16,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233805980] [2021-03-11 10:00:16,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:16,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:16,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:16,586 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:16,616 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-03-11 10:00:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:16,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-03-11 10:00:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:16,623 INFO L225 Difference]: With dead ends: 21 [2021-03-11 10:00:16,623 INFO L226 Difference]: Without dead ends: 10 [2021-03-11 10:00:16,624 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-03-11 10:00:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-03-11 10:00:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-03-11 10:00:16,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2021-03-11 10:00:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:16,648 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-03-11 10:00:16,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-03-11 10:00:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-03-11 10:00:16,649 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:16,649 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:16,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 10:00:16,650 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:16,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:16,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2088495033, now seen corresponding path program 1 times [2021-03-11 10:00:16,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:16,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264803646] [2021-03-11 10:00:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:16,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:16,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:16,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:16,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 10:00:16,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:16,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:16,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264803646] [2021-03-11 10:00:16,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:16,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 10:00:16,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077573324] [2021-03-11 10:00:16,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:16,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:16,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:16,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:16,740 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:16,747 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-03-11 10:00:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:16,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-03-11 10:00:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:16,748 INFO L225 Difference]: With dead ends: 10 [2021-03-11 10:00:16,748 INFO L226 Difference]: Without dead ends: 9 [2021-03-11 10:00:16,748 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-03-11 10:00:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-03-11 10:00:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-03-11 10:00:16,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-03-11 10:00:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:16,750 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-03-11 10:00:16,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-03-11 10:00:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-03-11 10:00:16,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:16,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:16,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 10:00:16,751 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2055600003, now seen corresponding path program 2 times [2021-03-11 10:00:16,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:16,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203884059] [2021-03-11 10:00:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:16,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:16,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 10:00:16,796 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 10:00:16,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 10:00:16,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:16,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:16,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203884059] [2021-03-11 10:00:16,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:16,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 10:00:16,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492947607] [2021-03-11 10:00:16,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 10:00:16,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:16,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 10:00:16,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 10:00:16,807 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:16,815 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2021-03-11 10:00:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 10:00:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-03-11 10:00:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:16,816 INFO L225 Difference]: With dead ends: 5 [2021-03-11 10:00:16,816 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 10:00:16,816 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 10:00:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 10:00:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 10:00:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 10:00:16,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-03-11 10:00:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:16,817 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 10:00:16,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 10:00:16,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 10:00:16,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 10:00:16,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:00:16 BasicIcfg [2021-03-11 10:00:16,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 10:00:16,822 INFO L168 Benchmark]: Toolchain (without parser) took 3800.68 ms. Allocated memory was 255.9 MB in the beginning and 436.2 MB in the end (delta: 180.4 MB). Free memory was 236.8 MB in the beginning and 344.9 MB in the end (delta: -108.1 MB). Peak memory consumption was 71.4 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:16,822 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 10:00:16,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.71 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 236.1 MB in the beginning and 325.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:16,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.70 ms. Allocated memory is still 362.8 MB. Free memory was 325.2 MB in the beginning and 323.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:16,828 INFO L168 Benchmark]: Boogie Preprocessor took 16.40 ms. Allocated memory is still 362.8 MB. Free memory was 323.1 MB in the beginning and 321.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:16,828 INFO L168 Benchmark]: RCFGBuilder took 529.44 ms. Allocated memory is still 362.8 MB. Free memory was 321.9 MB in the beginning and 328.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:16,829 INFO L168 Benchmark]: TraceAbstraction took 2818.94 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 328.9 MB in the beginning and 344.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:16,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 395.71 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 236.1 MB in the beginning and 325.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.70 ms. Allocated memory is still 362.8 MB. Free memory was 325.2 MB in the beginning and 323.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.40 ms. Allocated memory is still 362.8 MB. Free memory was 323.1 MB in the beginning and 321.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 529.44 ms. Allocated memory is still 362.8 MB. Free memory was 321.9 MB in the beginning and 328.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2818.94 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 328.9 MB in the beginning and 344.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2325.6ms, 51 PlacesBefore, 14 PlacesAfterwards, 48 TransitionsBefore, 11 TransitionsAfterwards, 300 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 488 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 369, positive: 304, positive conditional: 0, positive unconditional: 304, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 234, positive: 208, positive conditional: 0, positive unconditional: 208, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 234, positive: 204, positive conditional: 0, positive unconditional: 204, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 107, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 369, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 234, unknown conditional: 0, unknown unconditional: 234] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - PositiveResult [Line: 738]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2754.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 5.8ms, AutomataDifference: 68.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2355.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 4 SDslu, 8 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 56.3ms SatisfiabilityAnalysisTime, 131.5ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...